black screen and the bluetooth is unfanction after upgrading windows 8 to 8.1
it had happened three times after upgrading, one directly after completing the upgrade and the second after one hour and the third next day..
now this problem has been disappeared but there are another problem one is the activation of bluetooth, very very
slow to be ready for active and could not send any files or receive.
the second one is the fan works loudly even if the laptop is cool.
this happened only after upgrading .
My laptop is sony vaio , model vpceg38fn.
Until now I deleted the bluetooth.
Solutions to the Problem black screen and the bluetooth is unfanction after upgrading windows 8 to 8.1
 I see that's why I couldn't open internet explorer but does that mean my laptop is in serious problem? and the window defender is not enough to protect the system?
 However, another problem happened the bluetooth has been disappeared from blue screen and it doesn't work now
You didn't tell us that you couldn't open Internet Explorer 11 (IE11) before! But if IE11's working OK now, we'll leave well enough alone.
Windows Defender includes anti-virus and anti-malware components.
Used in combination with the Windows Firewall's realtime protection, you have more than sufficient system protection.
Per Vijin V's previous post, make sure the Bluetooth Service
and the Bluetooth Support Service are both Started (running).
a) Press WinKey+R, type services.msc then press
b) Double-click on Bluetooth Service
and (in turn) Bluetooth Support Service.
c) If the status indicates that the service is not running,
Start the service.
Since you ran the Norton Removal Tool, you may need to download Win8.1-compatibility Bluetooth and/or network card drivers again (assuming the Win7 hardware is supported in Win8.1).
Check with Sony Support or start here:
PS: If the cooling fan(s) is still continually running or seems louder, you may need to
carefully clean the fan(s) with a few blasts of compressed air. If it's hot in Mumbai, do what you can to cool the computer & increase air-flow to the fan(s).
Note: It is recommended that you back up your files and folders before attempting this step:
- Move the mouse cursor over to the upper right side of the screen.
- A menu will pop up on the left. Click on the "Settings" feature on the menu.
- On the Settings window, click on the "Change PC settings."
- Now, left click on the "Update and recovery" feature.
- For the next step, left click on the "Recovery" feature.
- There is an option here saying "Refresh your PC without affecting your files." There, left click on the "Get started" button.
- Now, follow the instructions on the screen to finish the Refresh process.
- After the Refresh process has finished restart your Windows 8.1 or Windows 8 device.
- Check again to see if the error black screen and the bluetooth is unfanction after upgrading windows 8 to 8.1 has been fixed.
If you do not possess the technical expertise required to accomplish this yourself or do not feel comfortable doing so, download and install a powerful automated tool to get the job done.
Another Safe way to Repair the Problem: black screen and the bluetooth is unfanction after upgrading windows 8 to 8.1:
How to Fix black screen and the bluetooth is unfanction after upgrading windows 8 to 8.1 with SmartPCFixer?
1. Click the button to download SmartPCFixer . Install it on your system. Open it, and it will perform a scan for your system. The junk files will be shown in the scan result.
2. After the scan is finished, you can see the errors and problems which need to be repaired.
3. The Fixing part is finished, the speed of your computer will be much higher than before and the errors have been removed.
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